Evaporator Bubble-Induced Heat Transfer for Cooling Systems
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Solution Overview
Problem
Current refrigeration systems, particularly sorption refrigeration systems, face inefficiencies in transferring thermal energy from a fluid to be cooled to the refrigerant, limiting their cooling performance.
Innovation Solution
The method involves supplementing external heat energy to the refrigerant in the evaporator device, inducing or intensifying bubble formation through a pool boiling process, which enhances heat transfer by increasing the contact area and flow rate of the refrigerant, thereby improving cooling efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If external heat energy is supplied to the refrigerant in the evaporator device, then bubble formation is induced or intensified, but additional load is imposed on downstream components
Solution Approach 1:
The patent changes the thermal parameters of the refrigerant by supplying external heat energy to induce or intensify bubble formation. This parameter change (temperature and phase state) directly improves evaporation performance while the patent manages the downstream load through controlled heat input and system design
Solution Approach 2:
The patent utilizes phase transitions of the refrigerant (liquid to vapor through bubble formation) as the core mechanism. By controlling the phase transition process through external heat supply, the system enhances heat transfer efficiency and evaporation performance while managing the energy balance across downstream components
2Power
If bubble formation is intensified in the refrigerant reservoir, then heat transfer from fluid to refrigerant is improved, but energy input requirement increases
Solution Approach 1:
The patent converts the external heat energy input (which could be seen as an additional energy burden) into a beneficial effect by inducing bubble formation that dramatically improves heat transfer efficiency. The bubble formation process itself becomes the mechanism that transforms the energy input into enhanced cooling performance
Solution Approach 2:
The patent exploits the phase transition of refrigerant from liquid to vapor through bubble formation. This phase transition process naturally enhances heat transfer due to the high latent heat of vaporization, converting the energy input into efficient heat transfer without requiring additional energy for mechanical agitation or other auxiliary systems
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach significantly increases the evaporation performance by promoting bubble formation and wave movements, leading to improved heat transfer between the fluid and refrigerant, thus optimizing the refrigeration process while minimizing additional load on downstream components.
Implementation Method 1
transfer of thermal energy from the fluid to be cooled to the refrigerant
Implementation Method 2
the refrigerant in the evaporator device (1), in particular in the reservoir thereof, is stimulated... bubble formation is induced or bubble formation that has already been triggered as a result of the cooling heat transfer
Implementation Method 3
This is the result of a so-called pool boiling process, which is triggered by the cooling heat transfer from the fluid to be cooled to the refrigerant in the reservoir with the refrigerant
Implementation Method 4
supplying external heat energy to the refrigerant in the reservoir of the evaporator device, which comes from an external heat source
Implementation Method 5
In the evaporator, the refrigerant provided is evaporated from the medium to be cooled while absorbing thermal energy
Implementation Method 6
The evaporated refrigerant then reaches the absorber, where the evaporated refrigerant is absorbed by the solvent, namely by absorption
Data Source
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AI summary
The invention relates to a method for operating a cooling system, wherein a cooling agent is provided in a reservoir of an evaporator device (1) of a single-stage or multi-stage cooling system, a fluid to be cooled is cooled by effecting a cold-hot transfer from the fluid to be cooled to the cooling agent by means of a heat exchanger of the evaporator device (1) for cooling, and at least part of the cooling agent evaporates at the heat exchanger due to the cold-hot transfer, and the evaporated cooling agent is fed to a condensation device (2), wherein external thermal energy provided by an external heat source (10) is transferred to improve the cold-hot transfer to the cooling agent in addition to and separately from the cold-hot transfer, and bubble formation that supports the cold-hot transfer is thereby effected in the cooling agent in the reservoir by inducing the bubble formation in conjunction with feeding the external thermal energy or by intensifying bubble formation initiated by the cold-hot transfer. The invention further relates to a cooling system in a single-stage or multi-stage design.